(a)
Interpretation: The half-reactions are to be balanced. The anions that act as an oxidizing or reducing agent is to be identified.
Concept Introduction: An equation illustrating just the reduction or just oxidation that occurs in a redox reaction is called a half-reaction. The
(a)
Answer to Problem 80A
Explanation of Solution
An element is oxidized and acts as a reducing agent when its oxidation number rises.
The oxidizing agent is the element whose oxidation number decreases.
Consider the given half-reaction.
The above equation in balanced form is given as follows:
There is change in oxidation number of chromium.
The oxidation number of chromium is changed from
(b)
Interpretation: The half-reactions are to be balanced. The anions that act as an oxidizing or reducing agent is to be identified.
Concept Introduction: An equation illustrating just the reduction or just oxidation that occurs in a redox reaction is called a half-reaction. The oxidation and reduction half-reactions are written individually in the half-reaction approach before being compared to create a balanced redox equation.
(b)
Answer to Problem 80A
Explanation of Solution
An element is oxidized and acts as a reducing agent when its oxidation number rises.
The oxidizing agent is the element whose oxidation number decreases.
Consider the given half-reaction.
The above equation in balanced form is given as follows:
There is change in oxidation number of sulfur.
The oxidation number of sulfur is changed from
(c)
Interpretation: The half-reactions are to be balanced. The anions that act as an oxidizing or reducing agent is to be identified.
Concept Introduction: An equation illustrating just the reduction or just oxidation that occurs in a redox reaction is called a half-reaction. The oxidation and reduction half-reactions are written individually in the half-reaction approach before being compared to create a balanced redox equation.
(c)
Answer to Problem 80A
Explanation of Solution
An element is oxidized and acts as a reducing agent when its oxidation number rises.
The oxidizing agent is the element whose oxidation number decreases.
Consider the given half-reaction.
The above equation in balanced form is given as follows:
There is change in oxidation number of chromium.
The oxidation number of chromium is changed from
(d)
Interpretation: The half-reactions are to be balanced. The anions that act as an oxidizing or reducing agent is to be identified.
Concept Introduction: An equation illustrating just the reduction or just oxidation that occurs in a redox reaction is called a half-reaction. The oxidation and reduction half-reactions are written individually in the half-reaction approach before being compared to create a balanced redox equation.
(d)
Answer to Problem 80A
Explanation of Solution
An element is oxidized and acts as a reducing agent when its oxidation number rises.
The oxidizing agent is the element whose oxidation number decreases.
Consider the given half-reaction.
The above equation in balanced form is given as follows:
There is change in oxidation number of manganese.
The oxidation number of manganese is changed from
(e)
Interpretation: The half-reactions are to be balanced. The anions that act as an oxidizing or reducing agent is to be identified.
Concept Introduction: An equation illustrating just the reduction or just oxidation that occurs in a redox reaction is called a half-reaction. The oxidation and reduction half-reactions are written individually in the half-reaction approach before being compared to create a balanced redox equation.
(e)
Answer to Problem 80A
Explanation of Solution
An element is oxidized and acts as a reducing agent when its oxidation number rises.
The oxidizing agent is the element whose oxidation number decreases.
Consider the given half-reaction.
The above equation in balanced form is given as follows:
There is change in oxidation number of carbon.
The oxidation number of chromium is changed from
(f)
Interpretation: The half-reactions are to be balanced. The anions that act as an oxidizing or reducing agent is to be identified.
Concept Introduction: An equation illustrating just the reduction or just oxidation that occurs in a redox reaction is called a half-reaction. The oxidation and reduction half-reactions are written individually in the half-reaction approach before being compared to create a balanced redox equation.
(f)
Answer to Problem 80A
Explanation of Solution
An element is oxidized and acts as a reducing agent when its oxidation number rises.
The oxidizing agent is the element whose oxidation number decreases.
Consider the given half-reaction.
The above equation in balanced form is given as follows:
There is change in oxidation number of manganese.
The oxidation number of chromium is changed from
Chapter 20 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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